CD Projekt S.A. is a Polish video game developer, publisher and distributor based in Warsaw, which was founded in 1994 by Marcin Iwiński and Michał Kiciński. Iwiński and Kiciński were video game retailers before they founded the company. CD Projekt is best known for their The Witcher series of video games and their digital-distribution service GOG.com.

The company began translating major Western video-game releases into Polish, collaborating with Interplay Entertainment for two Baldur's Gate games. CD Projekt was working on the PC version of Baldur's Gate: Dark Alliance when Interplay experienced financial difficulties. The game was cancelled and the company decided to reuse the code for their own video game. It became The Witcher, a video game based on the works of Andrzej Sapkowski.

After the release of The Witcher, CD Projekt worked on a console port called The Witcher: White Wolf; but development issues and increasing costs almost led the company to the brink of bankruptcy. CD Projekt later released The Witcher 2: Assassins of Kings in 2011 and The Witcher 3: Wild Hunt in 2015, with the latter winning various Game of the Year awards. The company's upcoming project is Cyberpunk 2077, an open-world role-playing game based on the Cyberpunk 2020 tabletop system.

A video game distribution service, GOG.com was established by CD Projekt to help players find old games. Its mission is to offer games free of digital rights management (DRM) to players and its service was expanded to cover new AAA and independent games. The company opposes DRM in video games, and hopes that free downloadable content becomes an industry standard. CD Projekt considers maintaining their independence one of their most important strategies.